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Crown-shaped retainer

A retainer and crown-shaped technology, which is applied in the field of improvement of crown-shaped retainers, can solve problems such as inability to cope with deformation, and achieve the effects of easy assembly and high productivity

Active Publication Date: 2015-07-22
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, PA (polyamide) such as PA46 (polyamide 46) and PA66 (polyamide 66), which are conventional cage materials, cannot cope with deformation caused by centrifugal force accompanying high-speed rotation. Use PEEK (polyether ether ketone) with high mechanical strength (see paragraph 0032 of Patent Document 1)

Method used

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Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0032] It should be noted that, referring to figure 2 , 3 , 4A, and 4B denote the same reference numerals for the same parts or components as those of the conventional crown cage already described, and redundant descriptions will be omitted.

[0033] exist Figure 1A And an embodiment of a crown retainer 20 is shown in 1B. The overall appearance of crown retainer 20 and Figure 4A Similar to the conventional crown cage shown in 4B, it includes an annular base 22, a plurality of pockets 24, and a pair of claws 26 protruding from the openings of the pockets 24 in the axial direction of the cage. Additionally, by Figure 1A It can be seen that the pocket 24 opens toward one axial direction of the retainer 20 . It should be noted, Figure 1A It is a partially developed plan view of the cage 20, and the up-down direction of this figure corresponds to the axial directi...

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PUM

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Abstract

A crown-shaped retainer (20) has: an annular base section (22); pockets (24) which penetrate through the retainer in the radial direction and which have openings (a) on one axial side of the retainer; and pairs of protrusions (26), each of the pairs of protrusions (26) being located on both circumferential side of the opening (a) of each of the pockets (24). The inner peripheral surface of each of the pockets (24) comprises: a spherical portion (28) which is located on the inner side of the retainer in the radial direction; and a circular cylindrical portion (30) which is located on the outer side of the retainer in the radial direction. The inner diameter (φD2) of the circular cylindrical portion (30) is greater than the ball diameter (dw).

Description

technical field [0001] This invention relates to improvements in crown cages used in ball bearings. Background technique [0002] According to JIS0104-1991 Rolling Bearing Terms, a crown cage is defined as a cage having claws in a shape capable of combining rolling elements with the cage through elastic deformation. The origin of the name comes from the appearance shape in which a plurality of claws protruding in the axial direction are arranged on the ring-shaped base. In addition, the crown-shaped cage belongs to a cage formed by injection molding, die-casting, sintering, or the like, that is, a molded cage. [0003] Ball bearings are rolling bearings that use balls as rolling elements, such as figure 2 As shown, its main constituent elements include: an inner ring 10 with a track 12 on the outer circumference, an outer ring 14 with a track 16 on the inner circumference, and an inner ring 10 sandwiched between the track 12 of the inner ring 10 and the track 16 of the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/41F16C19/06F16C33/44
CPCF16C2204/50F16C19/06F16C2204/26F16C33/44F16C33/414F16C2204/20F16C2208/36F16C33/418F16C2240/44F16C33/416F16C43/08
Inventor 佐佐木克明
Owner NTN CORP